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Phone
15688871230
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Address
Chengdong Industrial Park, Zhangqiu District, Jinan City, Shandong Province
Shandong Longgu Heavy Industry Machinery Co., Ltd
15688871230
Chengdong Industrial Park, Zhangqiu District, Jinan City, Shandong Province
LGSR Roots blower is a conventional Roots blower model produced and manufactured by Shandong Longgu. At the same time, it continuously integrates advanced technology characteristics at home and abroad, uses advanced CAD assisted design and modern production processing centers, and has high production and processing accuracy and advanced technology. There are more than ten different models for you to choose from, including LGSR dense Roots blower, LGSR stainless steel Roots blower, LGSR water-cooled Roots blower, LGSR dual tank Roots blower, etc. It has the characteristics of small gas pulsation, low vibration, low noise, and strong adaptability. It can be used to transport clean air and inert gases. Special explosion-proof models can also be used to transport flammable and explosive gases such as hydrogen, biogas, gas, and corrosive gases such as sulfur dioxide.

LGSR Roots blower is a commonly used positive displacement fan equipment with a wide range of applications. It is mainly used in industries such as sewage treatment, aquaculture, pneumatic conveying, desulfurization and denitrification, which often require long-term stable and reliable operation. Users who use Roots blowers have simple operation, easy maintenance, high energy saving and environmental protection efficiency, and high cost-effectiveness.
1. Advanced manufacturing technology
Longgu Roots blower is made by combining domestic and foreign technology and years of production and manufacturing experience of manufacturers, using excellent manufacturing materials; The equipment has higher working intensity, which helps to improve production efficiency.
2. The fan is long-lasting and durable
The casing and wall panels of the Roots blower are processed by high-precision digital coordinate boring machines, with high precision, stable quality, and high overall efficiency. The sealing structure is reasonable, and oil and gas cannot enter the casing. Therefore, the output air is clean and free of grease. The intake and exhaust ports adopt a spiral structure and are equipped with mufflers to ensure smooth pulsation, low vibration, and low noise in the intake and exhaust. The impeller is designed with involute technology, ensuring reliable lubrication and effectively improving the service life of the bearing.
3. Reliable casting quality
The Roots blower castings are cast using resin sand technology, ensuring reliable quality. The gear adopts 20CrMnTi carburizing treatment, grinding processing, with a precision of five levels, more wear-resistant tooth surface, and can significantly reduce gear noise. The main components are processed using CNC equipment, and the gears adopt five level precision, resulting in high product accuracy and reliable operation. The casing and wall panels adopt a split structure for easy maintenance. Compact structure, small volume, light weight, easy to use and maintain. The fan does not require a V-belt drive, which improves the overall efficiency and reduces belt consumption.
4. Qualified in quality inspection before leaving the factory
The Longgu Roots blower undergoes a 48 hour trial run before leaving the factory, and can only be shipped after passing the debugging, ensuring the quality of the Roots blower leaving the factory.
Our company has various specifications and types of LGSR Roots blowers, and we can choose the appropriate performance Roots blower according to your needs. We will tailor a solution for you and help you choose cost-effective fan equipment.
1. According to different working methods, it can be divided into single-stage Roots blowers and two-stage Roots blowers.
2. Divided by the number of impeller heads: two blade Roots blower and three blade Roots blower;
3. Classified by conveying medium: air blower, gas blower, hydrogen blower, sulfur dioxide blower, etc;
4. Classified by fan structure: vertical blower, horizontal blower, axial blower, dense group blower, etc;
5. Divided by sealing type: labyrinth seal, expansion ring seal, packing labyrinth, mechanical seal and other types of Roots blowers.
6. Classified by purpose: shaft kiln blower, gasification blower, aeration fan, oxidation fan, desulfurization fan;
7. By transmission mode: direct connection blower, belt connection blower;
8. According to cooling methods: water-cooled blower, counter current cooling blower, etc.
Multiple combinations can meet the diverse needs of users. The following are high-definition real-life photos, with exquisite workmanship and trustworthy.


As a positive displacement fan, the working principle of LGSR Roots blower is that the impeller of the Roots blower rotates towards each other in the space sealed by the casing and wall panel. Due to the extremely small gap between the impeller and the impeller, the impeller and the casing, and the impeller and the wall panel, a vacuum state is formed at the inlet. Air enters the inlet chamber under the action of atmospheric pressure. Then, two of the blades of each impeller form a sealed chamber with the wall panel and the casing. During the rotation of the impeller, the air in the inlet chamber is continuously brought to the exhaust chamber by the sealed chamber formed by the two blades. Because the impellers in the exhaust chamber are interlocked, the air between the two blades is squeezed out. This continuous operation allows the air to circulate continuously. Continuously delivering from the inlet to the outlet. The internal cavity of the fan does not require lubricating oil, with a simple structure, smooth operation, stable performance, and adaptability to various uses.
| model | Pressure (kPa) | Flow rate (m ³/min) | Power (kw) |
| LGSR50 type | 9.8-70 | 0.5-2 | 0.75-4 |
| LGSR65 type | 9.8-70 | 1-2.5 | 0.75-5.5 |
| LGSR80 type | 9.8-100 | 2.5-4 | 2.2-7.5 |
| LGSR100 type | 9.8-100 | 3-6 | 3-11 |
| LGSR125 type | 9.8-100 | 5-9.5 | 5.5-18.5 |
| LGSR150 type | 9.8-100 | 10-22 | 7.5-37 |
| LGSR175 type | 9.8-50 | 19.65-34 | 11-55 |
| LGSR200 type | 9.8-100 | 27-56 | 15-110 |
| LGSR250 type | 9.8-100 | 60-90 | 30-160 |
| LGSR300 type | 9.8-100 | 90-130 | 37-200 |
| LGSR350 type | 9.8-100 | 80-116.82 | 55-160 |